Stefanos Tsitsipas Ugo Humbert Jan-Lennard Struff Fabio Fognini Matteo Berrettini Hamad Medjedovic Leandro Riedi Daniel Elahi Galan Juan Pablo Varillas Gustavo Heide Quentin Halys Botic Van De Zandschulp Stan Wawrinka Damir Dzumhur Yannick Hanfmann Lukas Klein Dominic Stricker